import Vue from 'vue'
import VueRouter from 'vue-router'
import { Dialog } from'vant'
import store from '@/store/'

Vue.use(VueRouter)

const routes = [
  {
    path: '/login',
    name: 'login',
    component: () => import('@/views/login/'),
    meta : { requiresAuth: false }
  },
  {
    path: '/',
    component: () => import('@/views/layout/'),
    children: [
      {
        path:'',
        name:'home',
        component: () => import('@/views/home/'),
        meta: { requiresAuth: false }
      },
      {
        path:'aq',
        name:'aq',
        component: () => import('@/views/aq/'),
        meta: { requiresAuth: false }
      },
      {
        path:'viedo',
        name:'viedo',
        component: () => import('@/views/viedo/'),
        meta: { requiresAuth: false }
      },
      {
        path:'my',
        name:'my',
        component: () => import('@/views/my/'),
        meta: { requiresAuth: false }
      },
      {
        path:'search',
        name:'search',
        component: () => import('@/views/search/'),
        meta: { requiresAuth: false }
      },
      {
        path:'article/:articleId',
        name:'article',
        component: () => import('@/views/article/'),
        //将动态路由参数映射到组件的props中，无论是访问还是维护性都能方便
        props: true,
        meta: { requiresAuth: false }
      }
    ]
  },
  {
    path:'/user/profile',
    name:'user-profile',
    component: () => import('@/views/user-profile'),
    meta: { requiresAuth: false }
  },
  {
    path:'/user/chat',
    name:'user-chat',
    component: () => import('@/views/user-chat'),
    meta: { requiresAuth: true }
  },
]

const router = new VueRouter({
  routes
})

//to:要访问的页面路由信息
//from:来自哪个页面的路由信息
//next:放行的标记

router.beforeEach((to,from,next) => {
  //判断页面是否需要登录才能访问
  if(to.meta.requiresAuth) {
    //如果已登录，则直接通过
    if(store.state.user){
      return next()
    }

    //没有登录，提示是否登录
    Dialog.confirm({
      title:'访问提示',
      message:'该功能需要登录才能访问，确认登陆吗'
    }).then(() => {
      //确认执行这里
      router.replace({
        name:'login',
        query:{
          redirect:router.currentRoute.fullpath
        }
      })
    }).catch(() => {
      //取消执行这里
      //取消了，中断路由导航
      next(false)
    })
  } else {
    //不需要登录状态的页面，直接过去
    next()
  }
})

export default router
